A gentleman met Bill one day. The rich man said, “They say you are very clever, but I don’t believe it,” Bill said with a smile, “I am not clever. Instead, you are very stupid.”
   The gentleman became very angry. Bill said, “Please don’t be angry, sir.”
   “If you don’t believe what I said, let me ask you one question. If you have a group of cows, and I give you another group, then how many groups of cows do you have?”
   “Why, that’s the easiest question in the world! One and one is two, I have two groups of cows,” Bill laughed and said. “You are wrong, sir. Two groups put together are still one group. That is the easiest question in the world.”